Verified by manufacturer 2 days ago
A fully preassembled riser floor unit, delivered ready to lift into place, fix to the floor or structure, and concrete around for seamless integration into the building.
Designed for open floor slab construction, the AlphaRiser CIR is a pre-assembled cast-in riser unit suitable for fixing directly to the casting deck or supporting primary steelwork.
AlphaRiser Cast-In Riser provides a pre-installed fire-rated solution for service penetrations in concrete slabs, streamlining installation and ensuring regulatory compliance in high-rise construction.
Features and benefits:
Color | Grey |
Finish | Smooth Coated |
Material | Steel Glass Reinforced Plastic (GRP) |
Shape | Square Rectangle |
Length | Bespoke |
Width | Bespoke |
Height | Bespoke |
Warranty description | 15 year |
Uniclass | |
CAWS | E20/230 Modular riser flooring units |
Classification data | |
Certification | Third-party certification by a United Kingdom Accreditation Service (UKAS)-approved independent laboratory. |
Designation | Grade S275 mild steel. |
Plate | 6 mm thick glass reinforced plastic gratings (GRP). Guidance for specification option:
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Frame | Steel, zintec pre-electrolytic coating with zinc-rich spot coating to weld points. |
Size | As drawings. Guidance for specification option:
Manufacturer guidanceConsult manufacturer and insert requirements. |
Additional supports | |
Size | 100 x 50 x 6 mm. 150 x 42 x 9.5 mm. Other. Guidance for specification option: *Other sizes and combinations can be used including flitch plates and back-to-back channels, but the above sizes are used in most cases. We will always make it clear on our drawings what type, size, and specification of structural members are being used and produce structural calculations to ensure that units comply with regulatory, structural, and customer requirements. Manufacturer guidanceJoists. |
Material and finish | Glass reinforced plastic (GRP) channel – to BS EN 13706-1, 2 and 3. |
Fixings | M10 x 25 x 8.8 bolts, locking nuts and washers – BZP finish. M10 x 8 mm Alphariser sprung channel nuts – BZP finish. 3 mm thick mild steel Alphariser joist end – Zinc plated finish. |
Prepared openings | As drawings. |
Fire resistance | To EN 13501-1, Class Bfl-s1. Manufacturer guidanceGRP fire-rating. |
Slip resistance | Non-slip resin bonded granular surfaces. |
Integral accessories | 4 mm thick mild steel sling lifting plates – mill finish. 1 tonne certified polyester x 2m long (typical length) lifting sling (4 per unit). Guidance for specification option: M10 x 25 x 8.8 bolts, locking nuts and washers – BZP finish. |
Contains Red List materials | No |
Country of product manufacture | United Kingdom |
Manufacturing plant location | |
Material | Steel Glass Reinforced Plastic (GRP) |
| Carbon dioxide equivalent | |
Carbon dioxide equivalent, as defined in BS EN 15804 Self-declared | |
Stage Normalised unit (kg CO₂ eq/kg) Declared unit (kg CO₂ eq/m²) Stage:A1–A3 ('Production stage') Normalised unit : Declared unit : 116 | |
Expected Life | 60 year |